CVE-2022-24713

Name
CVE-2022-24713
Description
regex is an implementation of regular expressions for the Rust language. The regex crate features built-in mitigations to prevent denial of service attacks caused by untrusted regexes, or untrusted input matched by trusted regexes. Those (tunable) mitigations already provide sane defaults to prevent attacks. This guarantee is documented and it's considered part of the crate's API. Unfortunately a bug was discovered in the mitigations designed to prevent untrusted regexes to take an arbitrary amount of time during parsing, and it's possible to craft regexes that bypass such mitigations. This makes it possible to perform denial of service attacks by sending specially crafted regexes to services accepting user-controlled, untrusted regexes. All versions of the regex crate before or equal to 1.5.4 are affected by this issue. The fix is include starting from regex 1.5.5. All users accepting user-controlled regexes are recommended to upgrade immediately to the latest version of the regex crate. Unfortunately there is no fixed set of problematic regexes, as there are practically infinite regexes that could be crafted to exploit this vulnerability. Because of this, it us not recommend to deny known problematic regexes.
NVD Severity
medium
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
CONFIRM https://github.com/rust-lang/regex/security/advisories/GHSA-m5pq-gvj9-9vr8
MISC https://github.com/rust-lang/regex/commit/ae70b41d4f46641dbc45c7a4f87954aea356283e
MISC https://groups.google.com/g/rustlang-security-announcements/c/NcNNL1Jq7Yw
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PDOWTHNVGBOP2HN27PUFIGRYNSNDTYRJ/
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JANLZ3JXWJR7FSHE57K66UIZUIJZI67T/
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3YB7CURSG64CIPCDPNMGPE4UU24AB6H/
MLIST https://lists.debian.org/debian-lts-announce/2022/04/msg00003.html
DEBIAN https://www.debian.org/security/2022/dsa-5113
MLIST https://lists.debian.org/debian-lts-announce/2022/04/msg00009.html
DEBIAN https://www.debian.org/security/2022/dsa-5118
GENTOO https://security.gentoo.org/glsa/202208-14
GENTOO https://security.gentoo.org/glsa/202208-08

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:rust-lang:regex:*:*:*:*:*:rust:*:* regex >= None < 1.5.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
bat 3.15-community 0.18.3-r2 Chloe Kudryavtsev <toast@toast.cafe> fixed
bat 3.16-community 0.21.0-r0 Chloe Kudryavtsev <toast@toast.cafe> fixed
delta 3.16-community 0.13.0-r0 Aleks Bunin <alpinelinux@compuix.com> fixed